Incandescent-lamp socket.



No. 676,202. P-at ented June 1:, 19m.

w. H; PERKINS.

INGANDESCENT LAMP SOCKET.

(Applicgtion filed Apr. 9, 1901.) (N0 Modei.)

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llllllllllmiwmlfllll III UNITED STATES PATENT OFFICE.

WALTER H. PERKINS, OF WATERBURY, CONNECTICUT, ASSIGNOR TO THE WATERBURYMFG. CO., OF SAME PLACE.

lNCANDESCENT-LAMP SOCKET.

SPECIFICATION forming part of Letters Patent No. 676,202, dated June 11,1901.

Application filed April 9, 1901- To all whom it may concern:

Be it known that I, WALTER H. PERKINS, of Waterbury, in the county ofNew Haven and State of Connecticut, have invented a new Improvement inIncandescent-Lamp Sockets; and I do hereby declare the following,whentaken in connection with the accompanying drawings and the numerals ofreference marked thereon, to be a full, clear, and exact description ofthe same, and which said drawings constitute part of this specification,and represent, in-

Figure 1, a view in side elevation of one form which an incandescent-lamp socket provided with my invention may assume; Fig. 2, a detachedview, in side elevation, of the sheet-metal cap thereof; Fig. 3, acorrespond ing view of the sheet-metal body thereof; Fig. 4, an enlargedview, in vertical section, showing the locking of the cap and bodytogether by the entrance of alocking-shoulder formed upon the screwintoa locking enlargement formed at the inner end of the inner leg of thebayonet-slot; Fig. 5, a detached perspective view of the screw; Fig. 6,a corresponding view of the flanged and tapped bushing therefor; Fig. 7,aview showing the cap and body in side elevation with the slot andbushings reversed in position; Fig. 8, a modified construction showinghow the bushing may be dispensed with.

My invention relates to an improvement in incandescent-lamp sockets, theobject being to improve, simplify, strengthen, and reduce the cost ofsuch sockets, as well as to make them more convenient and reliable inuse.

With these ends in view my invention consists in certain details ofconstruction and combinations of parts, as will be hereinafterdescribed, and pointed out in the claims.

In carrying out my invention as herein shown I form the inner end of theinner leg of the bayonetslot 2 in the sheet-metal cap 3 of the socketwith acircular locking enlarge ment 4 for the reception of alocking-shoulder 5, formed just under the head of the screw 6, mountednear the upper edge of the sheet metal body 7 of the socket and designedto enter the said slot for locking the cap and body together. Toenterthe screw 6 into the slot 2, it is turned or set so that itsshoulder Serial No. 55,068. (No model.)

5 willclear; but after the said shoulder has been brought intoregistration with the looking enlargement 4 the screw is turned so as toenter the shoulder thereinto, whereby the screw locks the cap and bodytogether, so that neither of the same can be turned until after thescrew has been again turned out so as to disengage the shoulder 5 fromthe enlargement 4. For the reception of the screw I preferably employ atapped bushing 8, having a flange 9 at its outer end. This bushing isset into a hole 10 formed in the body 7 and surrounded by a circularrecess 11, produced by setting the metal inward around the hole 10 for asufficient depth to receive the flange 9, the outer face ofvwhioh willthen be flush with the face of the body 7. In this Way Iform an amplebearing for the screw. I am not, however, obliged to use the flanged 7obushing S, because, if preferred, the metal of the body 7 may be driftedin to form a socket or bearing 12, as shown in Fig. 8, and tapped, asalso shown in the said figure, for the reception of the screw. Of coursethe coaction 7 5 of the locking-shoulder 5 of the screw with the lockingenlargement4 of the bayonet-slot is not efiected by the provision madefor carrying the screw itself, and I do not limit myself to doing thatin any one way. Instead So of locating the bayonet-slot 2 in the cap andthe screw in the body the said slot and screw may be reversed inlocation, as shown in Fig. 7, in which the cap 3 is shown as providedwith a bushing 13 and the body 7 as formed with a bayonet-slot 14. Itwill be understood, of course, that every socket is provided with twobayonet-slots and two coupling-screws, but as they are duplications ofeach other it is sufficient to show and describe one herein. I wouldtherefore have it understood that I do not limit myself to the exactconstruction herein shown and described, but hold myself at liberty tomake such changes as fairly fall within the spirit andscope of myinvention. 5

Having fully described my invention, what I claim as new, and desire tosecure by Letters Patent, is-

1. In an incandescent'lamp socket,the combination with the cap and thebody thereof, one of which is provided with a bayonet-slot having theinner end of its inner leg formed with a locking enlargement, and theother of whichiisformed with a socket for the reception of a screw; of acoupling-screw formed upon the inner face of its head with alocking-shonlder adapted to enter the said enlargement for locking thecap and body to-. =gether.

2. In an incandescent lamp socket,'-the combination with a. cap andbody, one of which is formed with a bayonetslot, and the other of whichis formed with a. hole surrounded by a recess, of a flanged bushing setinto the said recess and tapped, and ascrew mounted n the said bushingand adapted to enter the said slot.

In testimony whereof I have signed this specification in the presence oftwo subscrib- 'ing witnesses.

WALTER I'I. PERKINSa Witnesses:

ADOLPE O. BECKER, EDWARD H. MARSHALL.

